Sheila Greenwald (born May 26, 1934) is an American writer and illustrator of books for children and young adults.

She is known best for Rosy Cole’s Great American Guilt Club (1985) and other Rosy Cole books, and has won awards including the Parents' Choice Award, and the Santa Monica Library's Green Prize for sustainable literature.

In an article written by Greenwald for Publishers Weekly in 2018, she wrote, "The Rosy Cole books", edited by Melanie Kroupa, "not only gave me the opportunity to create humor and character by juxtaposing text with illustrations, but allowed me to vent opinions on competition, sexual precocity, materialism, conformity to peer pressure, and more".

[9] Greenwald has created illustrations for over seventy books for both adults and children written by others, among them the classic, The Pink Motel, by Carol Ryrie Brink.

In the July, 1966 issue of Harper's Magazine she wrote, My Life Story,[10] as well as illustrating additional articles, which were not her own.